Finishing roll



July 27, 1926. 1,593,685

E. ASHTON FINISHING ROLL Filed March 21, 1924 Patented July 27, 1926.

' UNITED STATES are OFFICE.

ERNEST ASHTON, OF SWAJVIPSCOTT, MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MACHINERY CORPORATION, 01 PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

FINISHING ROLL.

Application filed March 21, 1924.

This invention relates to finishing rolls and is illustrated as embodied in a scouring roll of the split type provided with retaining flanges. Scouring rolls are well known in the trade which are constructed with split body portions connected by means of a hinge at one side and with laterally disposed retaining flanges adapted to be secured to the body portions in various ways and retain said body portions upon a shaft while allowing their separation for the renewal of the strip of abrasive material surrounding the body portions. In one form of roll which has been extensively used, one half of the body portion is secured by means of screws to the retaining flanges, while the other half of the body portion is hinged to the first half and is retained in position by means of a transversely extending cotter pin, which is passed through apertures in both flanges and the corresponding aperture in this hinged portion of the roll. In this arrangement, the cotter pin is removed when it is desired to renew the abrasive covering so as to allow one section of the body portion to be moved to admit the ends of the covering between the two sections.

Still another form of scouring roll of the same general class is shown in Patent No. 1,326,495. issued December 30; 1919 on the application of Charles E. Graham. In this form the body portion, comprising two halves of an annulus hinged together at one edge, is received between the broad flanges of the hub portion and is retained in position therein by means of transverse pins passing through and projecting beyond said body portions and adapted to be received in and to travel along cam slots in the retaining flanges. These cam slots extend from the periphery of the flange to a point near the center, and when the body portions are rotated in one direction with respect to the flanges, they are bound in position by the wedging action of the pins in the cam s ots.

Scouring rolls of the types above described may be rotated at very considerable speeds. Obviously then the breaking of any part which would allow the body portions to fly outwardly under the action of centrifugal force will be extremely dangerous to the operator. Difficulty has been found in Serial No. 700,987.

the first type of wheel above described, because of occasional breaking of the cotter pins, and, in the case of the second type of wheel, the body portions have sometimes been accidentally displaced until the pins therein were positioned opposite the open ends of the cam slots. This allowed the parts of the body portion to be thrown outwardly, thus destroying the wheel and endangering the operator.

One object of this invention is to provide an improved construction of a finishing roll of this general type, which may be economically constructed, and which will, nevertheless, provide a construction which will be stronger and safer to operate.

In the illustrated embodiment, according to features of the invention, the retaining flanges are provided with cam slots arranged to co-operate with transverse pins in the body portions, and the cam slots are closed and included wholly within the periphery of the wheel. As a result there is no danger of the destruction of the wheel or the flying out of the parts thereof even though. the body portion becomes unwedged and is rotated so that the pins therein approach the outward end of the cam slots.

In the drawings,

Fig. 1 is a side elevation illustrating the members of the body portion in closed position but not locked;

Fig. 2 is a side elevation showing the members of the body portion in open position; and

3 is a front elevation of the arrangement shown in Fig. 1.

The device is intended to be mounted upon a shaft, such as that shown at 10, and comprises a two-part hub consisting of flanges 12 and 14 and hub portions 16 and 18. Set screws 20 in the hub portions are used for retaining the hubs in their desired relation on the shaft. Each of the flanges is provided with corresponding slots comprising a cam portion 24 and end portions 26 and 28. The body member, which fills the spaces between the flanges of the hubs and is retained in position thereby, comprises two halves 30 and 32 of an annulus which are hinged together at 34 and are provided with projecting pins 36 for the retention of the strip of abrasive cloth in a manner well understood in the art. Pins 38 and 40 are mounted transversely of the two halves of the annulus and are designed to enter the slots in the flanges of the hub members. When it is desired to open the body portion to renew the abrasive strip, the body member is rotated relatively to the flanges and the pins are brought opposite the end portions 26 and 28 01 the slots. These end portions, it will be seen from an inspection of Fig. 2, are substantially concentric with the center of hinge 84 so that they may allow the opening of the body portion with the greatest facility. After the ends of the strip have been engaged upon the pins 36 the two halves of the body portion will be closed and a reverse relative rotation between the body portion and the hub members effected to cause the pins 38 and 40 to travel along the cam portions 2%. whereby the body portions will be wedged tightly in closed position as the pins are forced toward the center of the shaft by the changing relation of the cam portions 2% of the slots, and the scouring roll will be ready for use. The closed slots are efiective to prevent accidental detachment of the body portions from the roll in case they become unlocked and tend to fly apart due to centrifugal force.

Because of variations in width of the various body portions which are supplied and because of the variations in similar body portions, it is not feasible to make the hub sections 16 and 18 integral. Furthermore, such an integral construction would not allow the ready replacement of the body portions should breakage occur because of the necessity for entering the pins 38 and 1-0 in the slots in the flanges of the hub members.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States 'is:

1. In a scouring roll, hinged body portions provided with laterally extending locking pins and a hub having flanges between which the body members are received when in closed position, said flanges being provided with similar closed cam slots adapted to receive the pins, said slots ing pins and a hub having flanges between which the body members are received when in closed position, said flanges being provided with similar closed cam slots adapted to receive the pins, one portion of each slot extending around the center of the wheel and approaching said center to co-operate with the pins to Wedge the body members together, another portion of each slot being concentric with the hinge of the body members to allow the body members to be opened while still retaining said members against accidental detachment.

3. In a scouring roll, hinged body members provided with laterally extending loc ing pins and a hub having flanges between which the body members are received when in closed position, said flanges being provided with closed cam slots adapted to re ceive the pins, one portion of each slot extending around the center of the wheel and approaching said center to co-operate with the pins to wedge the body members together, another portion of each slot being concentric with the hinge of the body members to allow the body members to be opened while still retaining said members against accidental detachment, said concentric portions being joined to those ends of the cam slots which are removed from the center of the wheel.

In testimony whereof I have signed my name to this specification.

ERNEST ASHTON. 

